Excavating machine



vv, CULLAIZ. EXCAVATING MACHINE.

APPLlCATION FILED JULY12,1920.

l 94:1 23922 Patented Apr; 18, 1922.

3 SHtETS-SHEET l.

W. COLLATZ.

EXCAVATING MACHINE.

APPLICATION FILED JULY 12,1920.

1.412,922., Patented Apr. i8. 1922.

3 SHEETS-SHEET 2.

I N VEN TOR.

W ATTRY.

W. COLLATZ.

EXCAVATING MACHINE.

APPLICATION FILED .IULY I2, I920. 1,412,922, Patented Apr. I8, 1922.

3 SHEEI-S-SHEET 3.

IN VEN TOR.

WLM/fam CoN BY UNITED STATES PATENT oFETcE.

, WILLIAM coLLA'rz, or carence, I LLrNors.-

nxcAvATTNe Macnrlm Specification of Letters Patent.

Appncauon'nled July 12, 1920. seria; No. 395,443.

To all whom t may con-cem: p

Be it known that I, WILLIAM CoLLATz, a

citizen of United States, residing at Chicago,

This inventlon relates to improvements in excavating machines.

One object of the invention to. providea compact, substantial, easilycontrolled, simple excavating machine arranged to scoop -up the materialat one place and dee posit it in a car or other receptacle, the machinebeing particularly adapted for use 1n making drifts in mines where theworking space available for operations v1s very restricted both as toheight and width. -Another and more specific object of the invention isto provide an excavating machine wherein is employed a scoop universallymounted.

The invention furthermore consists in the improvements'in the parts anddevices and in the novel combinations of the parts and devices hereinshown and made the subject matter of claim.

In the drawing forming a part of this specification, view of anexcavating machine showing my improvements in connectiontherewith.- Theosition of the machine'is shown in the drawing in Figure 1 as it wouldappear in a mine when employed in drifting. Figure 2 is a verticalsectional view corresponding substan- Els@ tially to the line 2 2 ofFigure 1. Figure 3 is a part horizontal sectional view, part topplanview of the machine illustrated in Figure 1, certain parts being omittedin order to more clearly indicatethe structure. And Figure 4 is adetailed sectional view, upon an enlarged scale, correspondingsubstantially to the line 4-4 of Figure 1. v

In the said drawing, the improved machine is shown as it would bedesigned for use in mine drifting whereit can be run on tracks and thedirt, gravel, or ore, excavated from in front of the machine and dumpedinto` a suitable car C at the rear thereof. As shown,

thel machine comprises a base Av and a table B pivotally mountedthereon. The base A is suitably mounted ona truck having wheels l0-10 tofacilitate movements of the ma- Figure l .is'a'side elevational chinefrom one place to another. rIhe base Patented-Apr.' 18,1922. p y i A ofthe machine will be made in the formv l A of a heavy casting and iscircular, the same being provided around its periphery with a'.

circular rack 11. The table B is alsoin the formof a casting and ispivoted on the base y A, the two members A and B being provided w1thsultable preferably machined bearing surfaces 12 near the periphery andwith corresponding bearing lsurfaces 18 near the pivot o' king pin 14.vThe latter is made -hollow as indicated at 15 so as to permit the supplyof com-pressed air tothe operating motors, hereinafter described,regardless of theiposition of the table B with lrespect-to the base A.Aswill be understood by those skilled in'the art, the compressed air isintroduced through a pipe which. passes up within the pivot pin 14. andhas a swivel connection at the top thereof from which lead the branchipes to the various motors.

In order to swmg the table B into any de- 4 sired angular position withrespect Ato the base A, I mount a vertical 'shaft' 16 in suitablebearings 17 and 18 carried by the table B, the shaft 16 having a pinion19 at its lower end vwhich meshes l,with the circular rack 11. The upperend of the shaft l'carries a 'beveled gear 20 with which co-operates abeveled gear 21 mounted to rotate about a horizontalaxiasaid beveledgear 21 being driven fromA a compressed air motor indicated generally bythe reference Din the drawings.v The .air motor referred to is onlyshown diagrammatically as it is believed that f this is suficient for anunderstanding of the '1 invention. Any suitable motor may belemi.

engine, the specific typevof motor forming` lno part of my invention. Asclearly indi-l :ployed as for instance the well known Dake cated inFigure 1, the motor- D has a conl trolling lever 22 by which it may bestarted and stopped. As will be understood by those skilled in the art.asuitable reduction gear is interposed between the motor D proper andthe beveled gear 21, such reduction gear being indicated generally` bythe reference E in Figures 2 and 3. As will be obvious, by

rotating the shaft 16, the table B will be compelled to revolve Withrespect to the base`A and the arrangement is suchthat the table caneffect a complete revolution with respect to the base A.

The table B carries a pair of upwardly extending relatively heavybearing standardsl 23-23. The latter, at their upper ends,

carry a journal or shaft 24 ofsuiicient strength to support the bucketand b-racket which carries it. Keyed or otherwise secured to said shaft24 is a heavy lbracket F` having a pair of arms 25-25. The latter areprovided with segmental racks 26-26 with which co-o crate pinions 27-27fixed on a shaft 127, t e latter being mounted in suitable bearingsprovided by said standards 23. The shaft 127, at its left-hand end asviewed in Figure 2, has secured thereto a worm gear 28 driven by a worm29, the latter being operated from another compressed air motorindicated diagrammaticallymost clearly in Figure 3'and referenced rEhecontrol of said motor G is effected throughfa control lever 30 indicatedin Figures 1 and 3. As will be understood by those skilled in the art,suitable bearings and housings are provided for the worm gear and wormand shaftings on which they are carried.v Asf will be evident from thepreceding description, the angular position of the heavy bracket F canbe varied by means of the train of gears just described. lt will also`be noted, from an inspection of Figure 1, that the axis of the bracket Fis in a vertical plane disposed within the periphery of the base 11 soas to keep within a suitable relatively short radius, the circle throughwhich the said heavy bracket F moves during the .rotation of the tableB.

'gear 35 is driven bya grear 135 loosely mounted on the shaft said gear135i being driven from a pinion 36 fixed on a horizontall extendingshaft 37 suitably mounte in su plemental bearings; 38'-,38 carried bysai; standards 23. The shafty 37 is in turn driven from a thirdcompressed air motor indicated diagrammatically and referenced H by.means ofgear 39, ar 40,- shaft 41, gear 42, and gear 43. s will beevident from an inspection of the drawing, the train of gears verymaterially reduces the speed of rot-ation so that the movements of thearm 32 within the bracket F are under easy control. The motor H isstarted and stopped by any suitable means as for instance by the controllever 44 indicated in Fi res 1 and 3.

In Figure 3 is dlagrammatically indicated a 4station S where theoperator may ,be positioned and who will have in front of him tablesuitable control levers for individually controlling each of the threemotors, D, G and H. lt will be understood that suitable piping isemployed to deliver the compressed air to each of the .motors and allunder the control of a single operator located at the station-S. -v

During theJ scooping up 0f the dirt, ore or other material, it is ofcourseessential that the machine be prevented fromjmovementand toaccomplish this result, l preferably provide the baseA with a pluralityof rigidly attached brackets 45` located at the corners or at othersuitable places, each 'of said brackets 4 5 having an adjustable heavyscrewH 46 therein extending vertically and adapted to be adjustedso asto lift the weight of the machine from the wheels 10 and have the entireweightsustained by said screws 46.

- ln operation, assuming the machine in the position shown in Figure 1where the dipper 33 is in position to scoop up thematerial, the operatorwill cause the bracket F to be oscillated by starting the motor G whichwill swing the vdipper 33 upwardly and collect the material. It willalso be understood that, under-some conditions, the oscillating movementof the bracket F may be dispensed with at this step in the operation,and the material be scooped u by operating the arm 32 from the motor or,under someconditions',

t there will be the combined movements of the bracket F and slidingmovement of the arm 32. The material having been scooped into thedilpper 33, the operator ,thenl causes the to rotate on the base A. bythrowing the motor D into operation. -The dipper is thereby swung to therear of the machine and at the same time the dipper 33 will be graduallyelevated so as to bring it to a level above the dump car C or otherreceptacle and-permit the material to be dumped therein. By suitablymanipulating the bracket F and the arm carrying the dipper, the lattercan be swung within a relatively small circle because of the compactarrangement illustrated, thereby adapting the machine particularly foruse in drifting of mines where the dimensions of drifts average about.7% feet'in height and 9 feetin width.

I have herein shown and described what l l now consider the preferredmanner of car-v rylng out the invention but it will be understood bythose skilled in the art that various changes and modifications may bemade without departing from the spirit of the invention and leontemplate'such changes and modifications as comev within the 'scope ofclaims appended hereto.

I claim:

1.V In an excavating machine, the combination with a base; of a tablerotatably mounted withA respect to said base about a vertical we axisand adapted to make a complete rotation with respect to the base; meansfor efecting relative rotation between said base and table; a heavybracket oscillatably mounted on said table about a horizontal axis,saidbracket including a -pair of laterally spaced segmental racksextending between said axis and the bottom part of the table; means foroscillating said bracket including pinions engageable with saidsegmental racks; an arm mounted on said bracket to slide back andforth'thereon in a plane perpendicular to said horizontal axis; meansfor effecting said sliding movements of said arm in any position of thebracket and including a gear rotatable about said horizontal axis andlocated between said segmental racks; and a bucket carried by one end ofsaid arm.

2. InA a machine of the.. character described, the combination with arelatively stationary base; of a table above said base; means pivot/allyconnecting said base and table including a hollow pivot pin throughwhich a source of motive power is adapted to be conducted; means forrotating said table on said base including a motor mounted on the table;a bracket oscillatably mounted about a horizontal axis and Acarried bysaid table; means for oscillating said bracket about its axis includinga second motor mounted on the table; a scoop-carrying arm slidablymounted on said bracket in a plane perpendicular to said axis; and meansfor adjusting said arm with respect to the bracket in any position ofthe latter including a third member also mounted on said table, all ofsaid three motors being adapted to be supplied with a motive powerconducted through said hollow pivot pin.

3. In a machine of the character described, the combination with a base;of a table rotatably mounted with respect to said base about a verticalaxis; means 'for effectin relative rotation between sa1d base and tab eincluding a motor mounted on the table; a bracket oscillatably mountedon said table about a horizontal axis; means for oscillating saidbracket including, a segmental rack on said bracket located between saidaxis and the bottom of the table and a lgear rotatably mounted on thetable about a horizontal axis co-operable with said rack; ascoop-carrying arm slidably mounted onl said bracket; and independentlycontrollable means mounted on the table for effecting the sliding`movements of said arm on said bracket in any position of the latter. 4

llng

bracket; and means for adjusting saidarm 4.* In a machine ofthecharacter described,

the combination with a base; of a tablerotatably mounted on said baseabout a vertical axis; means for effecting rotation' of said table withrespect to the base including a motor mounted directly on thetable; abracket oscillatably mounted on said table about a horizontal axis;means for oscillating said bracket; an arm mounted on said bracket toslide back and forth thereon in a plane perpendicular to-said horizontalaxis independently controllable means for effecting said slidingmovements of said arm including, a rack on said arm, a gear co-operabletherewithv and loosely mounted about said horizontal axis of thebracket, a motor, and reduction gearing between said motor and loosegear; and a member for containing material carried at one end of saidarm..

5. In an excavating machine, the combination with ,a base; of a' table.rotatably mounted on said base about a vertical axis; means foreffecting rotation of said table on said base; a bracket oscilatablymounted about a horizontal axis on said table; means for oscillatingsaid bracket; a scoop-carrying arm mounted on said bracket to slide backand forth thereon; Aand means for effecting? said sliding movements ofsaid arm, each of said. means for eecting the vmovements of-2 l.

the table,'bracket and arm including an independently controllable motordirectly mounted `on the table.

6. In a machine of the character described,l

the combination with a base; of a table;

means for pivotally connecting said base and table including a hollowpivot pin throughl which a compressed air supplying pipe is` adapted tobe extended; means for rotating lsaid table on said base including acompressed air motor; a bracket oscillatably mounted about a horizontalaxis and carried by said table; means for oscillating said bracketincluding a segmental gear thereon, I

al secondy compressed air motor and gearing between said motor and rack;a scoop-carryarm sl'idably mounted within lsaid with respect to thebracket in any position otl the latter including, a rack on ysaid arm,a-

